package com.ggh.baselibrary.utils.image;

import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

import java.security.MessageDigest;


public class GlideCircleTransform extends BitmapTransformation {
    public GlideCircleTransform(){
        super();
    }

    @Override
    protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
        return circleCrop(pool,toTransform);
    }

    @Override
    public void updateDiskCacheKey(MessageDigest messageDigest) {

    }
    private static Bitmap circleCrop(BitmapPool pool, Bitmap source){
        if(source==null) return null;
        int size=Math.min(source.getWidth(),source.getHeight());
        int x=(source.getWidth()-size)/2;
        int y=(source.getHeight()-size)/2;
        Bitmap squared= Bitmap.createBitmap(source,x,y,size,size);
        Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
        if(result==null){
            result=Bitmap.createBitmap(size,size,Bitmap.Config.ARGB_8888);
        }
        Canvas canvas=new Canvas(result);
        Paint paint=new Paint();
        paint.setShader(new BitmapShader(squared,BitmapShader.TileMode.CLAMP,BitmapShader.TileMode.CLAMP));
        paint.setAntiAlias(true);
        float r=size/2f;
        canvas.drawCircle(r,r,r,paint);
        return result;
    }
}